Best Licensed General Contractors in Portola Valley, CA
14 general contractors registered in Portola Valley hold current CSLB licenses, verified against official records as of August 22, 2026. The 8 below are the top-ranked, ordered by workers' compensation cover and years licensed.
- 2,193 active B general building contractor licenses in San Mateo County; 14 registered in Portola Valley
- 4 of Portola Valley's 14 licenses (28.6%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Portola Valley: 22 years
- Longest Portola Valley licensure: since 1978
- 182 county licenses reach their expiration date within 90 days
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- Verified
- August 22, 2026
- Licensed since
- 1986
- Phone
- (650) 400-3710
- Verified
- August 22, 2026
- Licensed since
- 1990
- Phone
- (650) 279-4750
- Verified
- August 22, 2026
- Licensed since
- 2005
- Phone
- (650) 530-2149
- Verified
- August 22, 2026
- Licensed since
- 2020
- Phone
- (650) 302-3170
- Verified
- August 22, 2026
- Licensed since
- 1978
- Phone
- (415) 516-9891
- Verified
- August 22, 2026
- Licensed since
- 1981
- Phone
- (650) 255-2147
- Verified
- August 22, 2026
- Licensed since
- 1986
- Phone
- (650) 714-2430
- Verified
- August 22, 2026
- Licensed since
- 1992
- Phone
- (650) 400-2266
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| William S Rehlich Inc. | #498794 | On file | 1986 |
| Built Form Design & Construction | #607923 | On file | 1990 |
| Builders Guild Inc. | #853400 | On file | 2005 |
| Tamasi Ross Construction Inc. | #1065683 | On file | 2020 |
| Lawrence M Schwab Construction Company | #367490 | Exempt or none on file | 1978 |
| Asborno Construction | #409883 | Exempt or none on file | 1981 |
San Mateo County general building licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 2,193 active B general building contractor licenses in San Mateo County, 14 of them registered in Portola Valley. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Portola Valley license has been held 22 years, and the longest-standing one dates to 1978. 4 of Portola Valley's 14 licenses (28.6%) carry current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 2,188 of the county's 2,193 licenses carry the same $25,000 bond California sets by statute. 182 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.
General Contractors in Portola Valley: common questions
How many licensed general contractors are there in Portola Valley?
14 active B general building contractor licenses are registered in Portola Valley, out of 2,193 across San Mateo County. 14 Portola Valley-registered companies passed our license verification, and the 8 on this page are the top-ranked of those. Only licenses CSLB shows as CLEAR and unexpired are listed.
Does California license general contractors?
Yes. California licenses contractors by classification, and B is the CSLB classification that authorises this work. 14 active B general building contractor licenses are registered in Portola Valley and 2,193 across San Mateo County, the longest-standing issued in 1978. Only CLEAR, unexpired licenses appear here.
How do I check a general contractor's license in California?
Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which 4 of Portola Valley's 14 currently carry. 182 San Mateo County licenses expire within 90 days.
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